/**
 *	工具类
 *
 */
window.Util = window.Util || {};

/**
 * 通用工具类
 *
 */
var Util = {
    /***
     * 格式化流量
     * 根据流量大小格式化到不同单位
     * 保留两位小数
     **/
    formatFlow: function(traffic){
        var KB = 1024;
        var MB = KB * 1024;
        var GB = MB * 1024;
        var TB = GB * 1024;
        var PB = TB * 1024;
        var num = 0;
        var unit = '';

        if (traffic >= PB) {
            num  = Math.floor((traffic / PB) * 100)/100;
            unit = "PB";
        } else if (traffic >= TB) {
            num  = Math.floor((traffic / TB) * 100)/100;
            unit = "TB";
        } else if (traffic >= GB) {
            num  = Math.floor((traffic / GB) * 100)/100;
            unit = "GB";
        } else if (traffic >= MB) {
            num  = Math.floor((traffic / MB) * 100)/100;
            unit = "MB";
        } else if (traffic >= 0) {
            num  = Math.floor((traffic / KB) * 100)/100;
            unit = "KB";
        } else {
            num  = 0;
            unit = "GB";
        }

        return {num: num, unit : unit};
    },

    formatFlowGB: function(traffic, isThousand){
        var k = (isThousand === true) ? 1000 : 1024;
        var n = traffic / (k*k*k);
        return parseFloat(n.toFixed(2));
    },

    formatFlowMB: function(traffic, isThousand){
        var k = (isThousand === true) ? 1000 : 1024;
        var n = traffic / (k*k);
        return parseFloat(n.toFixed(2));
    },

    num2ThString: function(num){
        return parseFloat(num).toLocaleString();
    },

    formatBandwidth : function (bandwidth) {
        result = this.formatFlow(bandwidth);
        result.unit = result.unit.slice(0, 1) + 'bps';
        return result;
    },

    /***
     * 将小时转换成天数
     */
    hour2day:	function(hour){
        if(hour >= 0){
            return Math.floor(hour/24);
        }else{
            return '--';
        }
    },


    /***
     * 数组求和
     */
    sum:		function(list){
        var sum = 0.0;
        for (var i = 0; i < list.length; i++){
            sum += list[i];
        }
        return sum;
    },

    /***
     * 模仿php strtotime
     * str格式 Y-m-d H:i:s
     */
    strtotime:	function(str){ 
        var tmp_datetime = str.replace(/:/g,'-'); 
        tmp_datetime = tmp_datetime.replace(/ /g,'-'); 
        var arr = tmp_datetime.split("-"); 
        var now = new Date(Date.UTC(arr[0],arr[1]-1,arr[2],arr[3]-8,arr[4],arr[5])); 
        return parseInt(now.getTime()/1000); 
    },

    // 和PHP一样的时间戳格式化函数
    // @param  {string} format    格式
    // @param  {int}    timestamp 要格式化的时间 默认为当前时间
    // @return {string}           格式化的时间字符串
    //http://www.daxueit.com/article/4603.html
    date :	function ( format, timestamp ) {
        var a, jsdate=((timestamp) ? new Date(timestamp*1000) : new Date());
        var pad = function(n, c){
            if( (n = n + "").length < c ) {
                return new Array(++c - n.length).join("0") + n;
            } else {
                return n;
            }
        };
        var txt_weekdays = ["Sunday","Monday","Tuesday","Wednesday", "Thursday","Friday","Saturday"];        

        var txt_ordin = {1:"st",2:"nd",3:"rd",21:"st",22:"nd",23:"rd",31:"st"};

        var txt_months = ["", "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"];

        var f = {
            // Day
            d: function(){
                return pad(f.j(), 2);
            },
            D: function(){
                t = f.l(); return t.substr(0,3);
            },
            j: function(){
                return jsdate.getDate();
            },
            l: function(){
                return txt_weekdays[f.w()];
            },
            N: function(){
                return f.w() + 1;
            },
            S: function(){
                return txt_ordin[f.j()] ? txt_ordin[f.j()] : 'th';
            },
            w: function(){
                return jsdate.getDay();
            },
            z: function(){
                return (jsdate - new Date(jsdate.getFullYear() + "/1/1")) / 864e5 >> 0;
            },

            // Week
            W: function(){
                var a = f.z(), b = 364 + f.L() - a;
                var nd2, nd = (new Date(jsdate.getFullYear() + "/1/1").getDay() || 7) - 1;

                if(b <= 2 && ((jsdate.getDay() || 7) - 1) <= 2 - b){
                    return 1;
                } else{

                    if(a <= 2 && nd >= 4 && a >= (6 - nd)){
                        nd2 = new Date(jsdate.getFullYear() - 1 + "/12/31");
                        return date("W", Math.round(nd2.getTime()/1000));
                    } else{
                        return (1 + (nd <= 3 ? ((a + nd) / 7) : (a - (7 - nd)) / 7) >> 0);
                    }
                }
            },

            // Month
            F: function(){
                return txt_months[f.n()];
            },
            m: function(){
                return pad(f.n(), 2);
            },
            M: function(){
                t = f.F(); return t.substr(0,3);
            },
            n: function(){
                return jsdate.getMonth() + 1;
            },
            t: function(){
                var n;
                if( (n = jsdate.getMonth() + 1) == 2 ){
                    return 28 + f.L();
                } else{
                    if( n & 1 && n < 8 || !(n & 1) && n > 7 ){
                        return 31;
                    } else{
                        return 30;
                    }
                }
            },

            // Year
            L: function(){
                var y = f.Y();
                return (!(y & 3) && (y % 1e2 || !(y % 4e2))) ? 1 : 0;
            },
            //o not supported yet
            Y: function(){
                return jsdate.getFullYear();
            },
            y: function(){
                return (jsdate.getFullYear() + "").slice(2);
            },

            // Time
            a: function(){
                return jsdate.getHours() > 11 ? "pm" : "am";
            },
            A: function(){
                return f.a().toUpperCase();
            },
            B: function(){
                // peter paul koch:
                var off = (jsdate.getTimezoneOffset() + 60)*60;
                var theSeconds = (jsdate.getHours() * 3600) +
                    (jsdate.getMinutes() * 60) +
                    jsdate.getSeconds() + off;
                var beat = Math.floor(theSeconds/86.4);
                if (beat > 1000) beat -= 1000;
                if (beat < 0) beat += 1000;
                if ((String(beat)).length == 1) beat = "00"+beat;
                if ((String(beat)).length == 2) beat = "0"+beat;
                return beat;
            },
            g: function(){
                return jsdate.getHours() % 12 || 12;
            },
            G: function(){
                return jsdate.getHours();
            },
            h: function(){
                return pad(f.g(), 2);
            },
            H: function(){
                return pad(jsdate.getHours(), 2);
            },
            i: function(){
                return pad(jsdate.getMinutes(), 2);
            },
            s: function(){
                return pad(jsdate.getSeconds(), 2);
            },
            //u not supported yet

            // Timezone
            //e not supported yet
            //I not supported yet
            O: function(){
                var t = pad(Math.abs(jsdate.getTimezoneOffset()/60*100), 4);
                if (jsdate.getTimezoneOffset() > 0) t = "-" + t; else t = "+" + t;
                return t;
            },
            P: function(){
                var O = f.O();
                return (O.substr(0, 3) + ":" + O.substr(3, 2));
            },
            //T not supported yet
            //Z not supported yet

            // Full Date/Time
            c: function(){
                return f.Y() + "-" + f.m() + "-" + f.d() + "T" + f.h() + ":" + f.i() + ":" + f.s() + f.P();
            },
            //r not supported yet
            U: function(){
                return Math.round(jsdate.getTime()/1000);
            }
        };

        return format.replace(/[\\]?([a-zA-Z])/g, function(t, s){
            if( t!=s ){
                // escaped
                ret = s;
            } else if( f[s] ){
                // a date function exists
                ret = f[s]();
            } else{
                // nothing special
                ret = s;
            }

            return ret;
        });
    },

    parseURL: function(url){
        var a =  document.createElement('a');
        a.href = url;  
        return {
        source: url,  
        protocol: a.protocol.replace(':',''),  
        host: a.hostname,  
        port: a.port,  
        query: a.search,  
        params: (function(){  
            var ret = {},  
                seg = a.search.replace(/^\?/,'').split('&'),  
                len = seg.length, i = 0, s;
            for (;i<len;i++) {  
                if (!seg[i]) { continue; }  
                s = seg[i].split('=');  
                ret[s[0]] = s[1];  
            }  
            return ret;
        })(),  
        file: (a.pathname.match(/\/([^\/?#]+)$/i) || [,''])[1],  
        hash: a.hash.replace('#',''),  
        path: a.pathname.replace(/^([^\/])/,'/$1'),  
        relative: (a.href.match(/tps?:\/\/[^\/]+(.+)/) || [,''])[1],  
        segments: a.pathname.replace(/^\//,'').split('/')  
        };
    },

    adSourceCookie : function(){
        var urlObj = this.parseURL(window.location.href);
        if(urlObj.params.ad_source){
            $.cookie('ad_source', urlObj.params.ad_source, {
                domain: '.xycdn.com'
            });
        }
        //console.log($.cookie('ad_source'));
    }
}


// 正则
Util.reg = {
    //url: /^(https?|ftp|mms):\/\/([A-z0-9]+[_\-]?[A-z0-9]+\.)*[A-z0-9]+\-?[A-z0-9]+\.[A-z]{2,}(\/.*)*\/?$/,
    //url: /^(http|ftp|https):\/\/[\w\-_]+(\.[\w\-_]+)+([\w\-\.,@?^=%&amp;:/~\+#]*[\w\-\@?^=%&amp;/~\+#])?$/,
    url: /^(http|ftp|https):\/\/[\w\-_\u4E00-\u9FA5]+(\.[\w\-_\u4E00-\u9FA5]+)+([\w\-\.,@?^=%&amp;:/~\+#\u4E00-\u9FA5]*[\w\-\@?^=%&amp;/~\+#\u4E00-\u9FA5])?$/,
    md5: /^([a-fA-F0-9]{32})$/,
    mobile : /^1[3-8]{1}\d{9}$/,
    email: /^(\w)+(\.\w+)*@(\w)+((\.\w+)+)$/
};


/**
 * ArtTemplate 模板方法
 */
template.helper('formatTime', function (str, format) {
    var date = new Date(str.replace('-', '/')),
        timestemp = date.getTime() / 1000,
        format = format || 'Y-m-d H:i';
    return Util.date(format, timestemp);
});
template.helper('isEmptyObject', function (obj) {
    return !obj || $.isEmptyObject(obj);
});
// GB单位转换
template.helper('GBUnit', function (num, isStd) {
    var n = isStd ? 1024 : 1000;
    var result = num/(n*n*n);
    return result === 0 ? result : result.toFixed(2);
});
// 数字输出格式
template.helper('NumFmt', function (num) {
    return num === 0 ? num : num.toFixed(2);
});


